Description A portable finger trainer, the device is very compact and ultra-light design, so it is convenient for you to carry. A great tool to improve the strength and flexibility of your fingers, thereby improving the ability of piano guitar playing. Features - Color: Black -Material:Silicone - Size: 7.50X2.00X1.80cm/2.95X0.79X0.71in - It has a simple design, but very practical in use, giving you a good using experience. - The piano guitar Finger Trainer is easy to operate and will not hurt your fingers. - With this finger expander, you will feel a significant change and your fingers will be more flexible. - Under simple and light design, this extender is easy to be carried around, and you can practice anytime. - Suitable for electric guitar, bass, ukulele, piano guitar, saxophone and instrument keyboard. Made of silicone material, it has good elasticity, stable and reliable use, not easy to tear, break or deform, easy to clean, and can be stored and used for a long time. It has a simple design, but very practical in use, giving you a good using experience. The piano guitar Finger Trainer is easy to operate and will not hurt your fingers. With this finger expander, you will feel a significant change and your fingers will be more flexible. Under simple and light design, this extender is easy to be carried around, and you can practice anytime. Suitable for electric guitar, bass, ukulele, piano guitar, saxophone and instrument keyboard. Made of silicone material, it has good elasticity, stable and reliable use, not easy to tear, break or deform, easy to clean, and can be stored and used for a long time.